Clique sizes for chimpanzee (Pan troglodytes) grooming and for human conversation are compared in order to test Robin Dunbar’s hypothesis that human language is almost three times as efficient a bonding mechanism as primate grooming. Recalculation of the data provided by Dunbar et al. (1995) reveals that the average clique size for human conversation is 2.72 whereas that of chimpanzee grooming ...

Poverty is a widespread problem not only inflicting poor nations, but also nations like the United States of America. In the history of the United States, women and racial minorities had always been persistently struggling with poverty. This paper intends to investigate poverty among Hispanic women between 2005 and 2010 and identify and analyze the relevant contributing factors. Within this per...

the world of music. Musicians use inexpensive personal computers instead of expensive recording studios to record, mix, and engineer music. Musicians use the Internet to distribute their music for free instead of spending large amounts of money creating CDs, hiring trucks, and shipping them to hundreds of record stores. As the cost to create and distribute recorded music has dropped, the amount...

poverty is a widespread problem not only inflicting poor nations, but also nations like the united states of america. in the history of the united states, women and racial minorities had always been persistently struggling with poverty. this paper intends to investigate poverty among hispanic women between 2005 and 2010 and identify and analyze the relevant contributing factors. within this per...

Shared free time with one’s spouse is positively related to marital satisfaction (e.g. Crawford et al. 2002). Yet little is known about the amount of time partners actually spend together and its trend over time. This article investigates how much free time couples spend in each other’s presence, how this has changed over the last four decades and to what extent this is related to changed circu...